stevens



(No Model.) 2 Sheets-Sheet 1.

M. P; STEVENS. LAMPT- No. 581,442. PatentedApr. 27, 1897.

Wl TNESSES: lNVE/VTB (No Mcde1.) 2 Sheets-Sheet 2. M. P. STEVENS.

LAMP.

No. 581,442. Patented Apr. 27, 1897A.

A TMR/VE Y S.

` UNITED STATES ATENT EEICE.

MERTON P. STEVENS, OF EAST ORANGE, NEV JERSEY, ASSIGNOR TO THE SAFETY OAR HEATING AND LIGHTING COMPANY, OF NEW YORK, N. Y.

LAMP.

SPECIFICATION forming part of Letters Patent No. 581,442, dated April 27', 1897'.

Application filed March 20, 1896. Serial No. 584,022. (No model.)

To all whom t may concern:

Be it known that I, MERTON P. STEvENs, a resident of East Orange, Essex county, State of New Jersey, have invented certain new and useful Improvements in Lamps, of which the following is a specification.

My invention relates to lamps, and has for its object to produce a new and improved lamp specially adapted for use as a car-lamp.

My invention consists in the construction hereinafter set forth and claimed.

My invention will be understood by referring to the accompanying drawings, in which- Figure l is a central vertical section of a lamp embodying my invention. Fig. 2 is a horizontal section on line 2 2 thereof, and Fig. 3 is a horizontal section on line 3 3 thereof.

In the drawings, A represents the main casting of the 1arnp,'which supports above it the hood B and the chimney O and is itself supported by the pipes D and E. Pendent from the casting A is a casting F, comprising longitudinal ducts a, between which are lateral passages b. (Best seen in Fig. 2.) Pendent from the casting A is a reflector G, which is preferably frusto conical., as shown, and backed by a casing G', which is in communication with the lateral passages b and, extending to or about the lower ends of the burnertubes, forms a straight passage for the airsupply to the flame. This casing is shown as terminating in a perforated air-distributor or air-distributing plate V, extending from the reflector to the burner-tubes to break up the current and properly distribute the air supplied to the flame. The casting F also sup-4 ports a two-part globe-supporting ring comprising the rings H I, which support a globe J, which surrounds the reflector. The ring I also supports a shade K, which surrounds the globe J and is maintained in position by suitable suspending-brackets c, only one of which is shown. The longitudinal ducts d communicate with the inside of the globe J outside of the periphery of the reflector G, the ducts also communicating with the hood B, so that the products of combustion can pass between the reector G and the globe J through the ducts a and the hood B and chimney O out of the lamp.

Coming now to the burner it will be noted by referring to Fig. l that an expansion-chamber L is suspended from the casting A, and this expansion-chamber is plugged at its lower end bya plug M, which receives burner-tubes d, in communication with the expansionchamber L. The lower ends of the burnertubes are shown as passing through aring O, which is flanged at e and receives a spreader P, which is supported bya bolt Q, socketed in the plug M. The upper edge of' the spreader rests against the flange e, whereby the spreader and burner are held firmly together. The spreader P is perforated for the passage of air, and delivers its air below the level of the lower ends of the burner-tubes to feed the lower face of the liame, the principal face of the iiame being fed by air which comes down through the casin g G' outside of the series of burner-tubes. As shown in the drawings, the apertures are below the level of the exit of the llame from the burner-tubes.

' The main casting A, with the ducts therein, the burner, the hood, and chimney are enveloped by a casing comprising a middle section Q, from which a top section R and perforated hood-section S are supported, which middle section also supports a lower section T, preferably of glass, which is shown as extending as far down as the lower edge of the two-part ring. Air is brought to the flame through the space between the enveloping section T through the lateral passages h into the frustoconical passage U between the burner and the reflector, where part of the air passes between the burner-tubes into the spreader to spread the flame and part passes outside of the burner-tubes to feed the upper side of the iialne, so that the result is an outwardly-b urning Argand flame. The gas is brought to the flame by the tube E into the distributing expansion-chamber L, whence it passes into the upper ends of the tubes and is emitted at the lower ends, where the air is brought in contact therewith.

Having described my invention, what I claim, and desire to secure by Letters Patent, is-

In a lamp, the combination of a gas-supply pipe, a single main casting having a gas-inlet duct therein, a longitu dinal internal inlet airpassage, a plurality oi' longitudinal outletducts formed in said casting and surrounding said internal passage7 a plurality of lateral inlet air-passages formed in said casting and extending between said outletducts an d coinlnunicating with the internal air-inlet passage, said casting being supported by the gaspipe which connects with the gas-inlet duct in said casting and itself supporting al1 of the parts of the lamp that are not supported directly by the gas-pipe, a depending` gas-burner communicating with the gas-inlet duct in the lnain casting, said gas-burner comprising an expansion-chamber, a series of burner-tubes spaced apart and extending from said expansion chamber, a removable foraininous spreader closed at one end and supported by the expansion-chamber within and filling an internal circular space formed by the burnertubes and extending below the outlet-openings thereof and out of the path of the spaces formed between the burner-tubes, a reflector surrounding said burner and forming at the interior thereof a passage for conducting air from the inlet air-passage in the casting to the burner, a foraininous partition extending between the reiiector and the burner-tubes adjacent t0 the exit-openings thereof, whereby air which is admitted to the interior of the reflector passes around and between the burnertubes and through the foraininous spreader encircled thereby and through the foralninous partition encircling the tubes and passes 01T around the exterior of the reflector through the longitudinal outlet-ducts formed in the casting, substantially as described.

The foregoingl speeiication of my improvexnents iu lamps signed by me this 14th day of March, 1890.

MERTON P. STEVENS.

Witn esses:

Guo. E. MORSE, lllAURIoE BLOCK. 

